76-11-10
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
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CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
SEEA
ENGINE START LEVERS
ENGINE START
SEE B LEVER OPERATE SWITCHES ACCESS PANEL
ENGINE START LEVERS
FWD
IGNITION CAMS
PILOT'S CONTROL STAND
IGNITION AND FUEL
A
SHUTOFF CAMS
FUEL SHUTOFF SWITCHES START CONTROL DRUM
1
S91 S90 S89
S88
FWD 
115V AC 
SWITCHES IGNITION  SCREWS MOUNTING  B  1  REF 28-22-12/401 

Engine Start Lever Switches Installation
Figure 401

B73897
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 76-11-10
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
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CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
TASK 76-11-10-404-007-C00
 3. Install the Start Lever Switches
________________________________
 A. References
 (1)  AMM 76-11-10/501, Engine Start Lever Switches
 B. Access
 (1)  
Location Zones
 101 Left Control Cabin
 102 Right Control Cabin

 (2)  
Access Panels
 S1012L Control Stand Forward Access Covers
 S1012R Control Stand Forward Access Covers

 C. Procedure (Fig. 401)
 S 424-008-C00
 (1)  Install the left engine start switches, S88 and S89, in the bracket.
 (a)  
Install one mounting screw in the switches, S88 and S89.

 (b)  
Hold the switch mounting screw in its position.

 S 424-009-C00
 (2)  Install the right engine start switches, S90 and S91, in the bracket.
 (a)  Install one mounting screws in the switches, S90 and S91. 1) Hold the switch mounting screw in its position.
 S 434-010-C00
 (3)  Connect the electrical leads to all of the switches.
 NOTE: If it is necessary, refer to the Wiring Diagram Manual.
____
 S 824-011-C00
 (4)  
Adjust the start lever switches (AMM 76-11-10/501).

 (5)
Install the middle brace found behind the forward, bottom panel.

 S 414-013-C00

 (6)  
Install the forward, bottom panel on the two sides of the pilot's control stand.

 S 434-012-C00
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CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
S 864-014-C00
 (7)  Remove the DO-NOT-CLOSE tags and close these circuit breakers:
 (a)  P6 Load Control Center
 1) L IGN
 2) R IGN

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////////////////////////A / /
CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
ENGINE START LEVER SWITCHES - ADJUSTMENT/TEST
_____________________________________________
 1.  General
_______
 A.  The engine start levers must be correctly rigged before you adjust the switches. This will make sure the fuel and ignition system operations are synchronized.
　
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